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Finding the Fourth Proportional to 147,705.86, 203,833.04 and 80,637.86

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Solution

The fourth proportional to 147,705.86, 203,833.04 and 80,637.86 is: 111,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,705.86 : 203,833.04 = 80,637.86 : x
  2. Step 2: Convert to fraction form
    147,705.86/203,833.04 = 80,637.86/x
  3. Step 3: Cross multiply
    147,705.86x = 203,833.04 × 80,637.86
  4. Step 4: Simplify right side
    147,705.86x = 16,436,660,142.89
  5. Step 5: Solve for x
    x = 16,436,660,142.89/147,705.86
  6. Step 6: Final answer
    x = 111,279.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.